Mar 19, 2010. /Lesprom Network/. M-real has increased its folding boxboard prices by Euro 90 per ton in continental Europe and GBP 90 ($137) in UK market, company said in a statement received by Lesprom Network. The increase will be effective for all invoicing from May 3, 2010, and will be valid until further notice. The extremely strong long-term demand and heavy cost inflation on all operational areas require higher prices in markets, company said.